Saved Bookmarks
| 1. |
If the line 7 ú 2+ 3k) +212 i + j - 2k) is parallel tothe planer 31 2; + mk) 10, then value of mis(a)=2(0) + 2no 0212 |
|
Answer» In △ABC AB=AC ⇒∠B=∠C (Angles opposite to EQUAL SIDES are equal) Now using angle SUM property ∠A+∠B+∠C=180 ∘
⇒80 ∘ +∠C+∠C=180 ∘
⇒2∠C=180 ∘ −80 ∘
⇒∠C= 2 100 ∘
=50 ∘
now ∠C+∠x=180 ∘ (Angles made on straight line (AC) are supplementary) ⇒50 ∘ +∠x=180 ∘
⇒∠x=180 ∘ −50 ∘ =130 ∘ |
|